I know people have been asking for the return of popular gametypes from Reach such as Dino Blasters and Splockets. I also know many people have spent money on the new Champions DLC, and have spent time playing Ricochet in the DLC playlist.
Whilst browsing the forums, I noticed a thread by the user unacquainted that contained a guide for Forging the Ricochet gametype.
I proceeded to create a map and gametype that is a mixture of Grifball, Ricochet, and the Reach classic, Dino Blasters.
A quick overview:
Unlimited score to win, one 12-minute round.
Players have 150% speed and jump, and gravity is decreased to 75%.
Players have 110% damage resistance and 1.5x overshields.
The carrier has 110% damage resistance and 2x overshields, and has the damage boost effect applied.
All other traits are default
The game has two loadouts, one which takes advantage of increased speed, and the other, which takes advantage of reduced gravity.
Infinity 1: Concussion Rifle, Energy Sword, No grenades, Thruster Pack, AA efficiency, Dexterity
Infinity 2: Concussion Rifle, Energy Sword, No grenades, Jet Pack, AA efficiency, Dexterity
The gametype is Zealotball, on my fileshare, and the map is Zealotball Court.
http://www.halowaypoint.com/en-us/players/nova%20eclipse%2011/halo4/fileshare
Opinions? I did about an hour of playtesting and tweaking until I arrived at the above settings. Is there anything you would like to see changed?
P.S. thanks to unacquainted for the Ricochet Forging guide! 
TL;DR Check out Zealotball and Zealotball Court in my fileshare (link above) and tell me what you think in this thread (only if you have the time, of course.)